I can't access the one paper from Dr. Gordon she cites, but the other paper by Dr. Doolittle has been discussed http://www.uncommondescent.com/educati....t-92415 here. In short, according to my reading, the paper does not suggest that common ancestry is false - it proposes that the concept of "ancestry" must be broadened to include activities like HGT which may break the "tree" aspects of the tree of life; this is not, I think, what Denyse is implying the paper says.

But what difference does that make when you want to include YECs in your big tent?